Shoe-treating machine



J. H. RIGBY.

SHOE TREATING MACHINE. APPLICATION FILED APR. 3, I919.

2 SHEETSSHEET I.

1. H. RIGBY.

SHOE TREATING MACHINE.

APPLICATION FILED APR- 3, 1919.

Patented Apr. 18, 1922.

- 2 SHEETS-SHEETZ.

JOHN" H. REGBY, 0F BEVERLY, lii'ASfiEAChUSETTS,

ASSZGNGB T0 UNITED SHOE Application filed. April 3,

aZ-Z whom '52 may concern Be it known that 1, JOHN H. Riser, a citizenot the United States, residing at Beverly, in the county of Essex andState of lvlassachusetts, have invented certain Improvements inShoe-Treating Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likereference characters on the drawings indicating like parts in theseveral figures.

This invention relates to machines for treating shoes and moreparticularly to mechanism for controlling the pressure be tween the shoeand tool as they are relatively moved. Such mechanism possesses specialadvantages in connection with automatic burnishing or edge settingmachines and as herein ti-LSi 03; is z: sociated with such machine, butcertain aspects ot the present invention be advantageously employed inother machines tor treating shoes.

in automatic burnishing or edge setting machines of the general typementioned, the shoe is ordinarily held by or clamped on a jack andpresented to the tool which is moved over or along the surface of theshoe to be treated by automatically produced relative movement betweenthe tool and the work, and means are provided for producing pressurebetween the work and tool as they are relatively moved. The pressurebetween the work and the tool, however, is liable to vary alongdifferent portions of the work owing to the varying curvature of thesurface treated by the tool and such variations of pressure as do occurare unrelated to the necessities of the work and conse-. quently areproductive of non-uniform results throughout the treated portions of theshoe, and, in some cases, impair or injure certain portions of the work.The lateral or side portions of the torepart edge of a shoe are nearlyfiat or straight from the side extremity of the toe curve to the ball,the toe is much more abruptly curved and in some extreme styles may bequite sharp, while the contour from the torepar't to the shank presentsa more or less abrupt reverse curve. In spade shank shoes, for instance,there is a comparatively sharp corner at the junction of the torepartand shank which is liable to be crushed or deformed by iipeciiication ofLettersiPetent.

SK-IOE-TEEATII\ G MIACHINE.

Patented Apr. 18., 19922.

1919. Serial No. 287,110.

the, tool, because at this point the shoe sole ES. not able to stand thepressure found desirable between the shoe and tool along other portionsof the shoe.

An important feature of the presentinvention, therefore, consists inmeans, which at a predetermined part of the shoe, acts in opposition tothe pressure producing means to control the pressure between the shoeand tool and adapt it to the requirements of the shoe As the shoe-andtool are automatically moved relatively to present different portions ofthe shoe to the action of the tool, permissive following movement of thetool toward and from the work is obtained by the yielding action of thepressure producing spring usually employed as a convenient form ofyielding pressure means. Such movement or the tool, however, causesvariations in the pressure between the work and the tool and, perforce,non-uniform effects on the work. Another important feature of thepresent invention, therefore, consists of novel means for automaticallycontrolling the pressure producing spring to maintain substantiallyuniform pressure between the work and tool.

The present invention also comprises various novel features andcombinations of parts in addition to those recited, all oi which will befully described hereinafter and for which protection will be soughtintheappended claims.

in the drawings Fig. 1 is a side elevation of a machine embodying thepresent invention, some of the parts being broken away for the purposeof clearness oi? illustration;

Fig. 2 is a perspective view on a large scale showing certain parts forautomaticallv controlling the pressure between the work and the tool,some of the parts being om itted and broken away; i

Fig. 3 is an under-side view of the parts shown in Fig. 2, some of thedetails being broken away.

The machine herein illustrated as embody ing the present invention is anautomatic burnishing or edge-setting machine wherein the edge-settingtool 10 is carried in the head 11 in which it is vibrated in asubstantially horizontal plane to act upon the edge of a shoe a, asindicated in Fig. 1. The

I the pressure lever 14 and has its extremities connected to themember-13 and a link 16, the lower end of the link being pivotallyconnected to the machine frame or a stationary member at 17, asindicated in Fig. 1.

The pressure lever 14 is pivoted to the main frame at 18, theconstruction being such that rotation of the pressure lever about itspivot 18 will move the edge-setting tool to the right or left, asindicated in Fig. 1; The members 12, 13, 14, 15 and 16 constitute aparallel motion mechanism which may be substantially as more fullydescribed in the patent to Keall, Gouldbourn & Jerram 'No. 1,078,684,dated November 18, 1913.

The shoe a is supported by or clamped in a jack 19, mounted on a shaft20 which is carried in mechanism which permits it to move in ahorizontal plane and to turn about a vertical axis. A cam 21 on theshaft 20 is automatically rotated and translated in a horizontal planeto turn the shoe from one side to the other and keep its edge presentedto the edge-setting tool 10.

All the mechanism thus far described may be substantially identical withthat shown in the patent mentioned, and reference is made to the patentfor 'a further description and illustration.

A. power transmitting element 22, preferably constituted as a universal.joint, is connected with the shaft 20 and a cam 23 is suitably supportedfor rotative movement with the shaft 20 through the universal jointconnection 22.

A fulcrum shaft 25 is mounted in'suitable bearings 25" formed in, themachine frame .or parts carried thereby, and has secured thereto thestarting or controlling lever 26 and an arm 27,thcconstruction heingsuch that movement of the starting or controlling lever 26 will effectrotative movement of the shaft and corresponding movement of the arm 27.A spring 29 has one end adjustably connected to the arm 27 at 28, F ig.2, and the other end attached to an arm 30 projecting from a sleeve 31loosely mounted on the fulcrum shaft 25.

The sleeve 31. has extending therefrom the arms 31* which are connectedby suitable links 32 to a rod or plunger 83, the lower end of whichworks in a dashpot 34, Fig. 1. A rod 35 is secured to the plunger andextends slidably through an abutment 36, Fig. 1.. 'pivotal y mounted at36* on the pressure lever 14. A spring 37 encircles the rod 35 and isconfined between the abutment 36 and a collar 38 secured to the rod Thepurpose of the spring 37, as will hereinafter more fully appear, is toproduce pressure between the work and the tool as the two are relativelymoved and for the purposesof identification the spring37 (ill hehereinafteridentified as the pres sure spring. The spring 29hereinbefore mentioned as extending between the arm 27 and the sleeve31, is stronger than the pressure spring 37 and for the purpose ofidentification it may be known as the cornpression spring because,through its action under control of means to be hereinafter described,the pressure effect of the pressure spring 37 is increased.

when the starting 'or controlling lever 26 is turned contra-clockwise,Fig. l, and F 2, it rocks the fulcrum shaft 2.) and arm 27, which,through the spring 29, sleeve 31. and connections, forces the plunger 3and rod 35 upwardly in Fig. 1 through the abutment 36, thereby placingthe pressure spring 37 under compression. The pressure lever 14 is thusactuated through the pressure spring 37 to produce pressure between thetool and the work, such pressure, in the present instance of theinvention, being transmitted through the tool.

The starting or controlling lever 26 has a catch 89 for retaining it inposition to which it may have been moved by the attendant, and saidcatch is automatically released when the action of the tool upon thework is completed as described in the patent hereinbefore mentioned.When the starting or controlling lever is thus released, the pressurespring 37 actsto force the plunger 33 back into the dashpot 34, carryingthe starting or controlling lever clockwise and. slacking off thepressure from the pressure lever 14.

Loosely mounted on the shaft 25 is a second sleeve 40 having an arm 41carrying a roll 42 which. engages the cam23. An arm 43 on the sleeve 40'extends towards and opposite an arm 44 extending from the sleeve 31, theconstruction being such that under the impulse of the compression spring29 the arm 44 will bear against the arm 43 which, through the sleeve 40and arm 41 is responsive to the controlling influence of the cam 23.

In order that the arms 43 and 44 may be properly associated incooperative relation, one of said arms, in the present instance the arm44, is provided with an'adjustable stud 45 and a set nut, as indicatedin Fig. 3, serves to maintain the adjustable stud in fixed adjustedposition. i 7

From the construction described it will. be evident that when thestarting or controlling lever 26 is moved contraclockwise. Figs. 1 and2, the'compression spring 29 will be placed under increased tension tothereby yieldingly' turn the sleeve 31 and,

perforce, place the pressure spring-37 in pressing relation with itsassociated parts to produce pressure between the work and the tool. Theparts being in the position stated and the machine in operation, shoulda high part of the cam 23 engage the roll 3-2 as the cam revolves, thearm d3 will act through the arm as to turn the sleeve 31 against thestress of the spring 29 and therey relieve the pressure exerted by thepress1 e spring 37 and modify the pressure between the work and thetool. lVhen the high part of the cam has passed the roll the strongerspring 29, acting through its connection with the rod 35, will againrestore the pressure spring 37 to its original pressure transmittingposition.

The cam 23, as hereinbofore described, rorates with the shaft- 20, andits contour will he so designed as to diminish the pressure (JtlUll ofthe spring 37 and the corresponding reaction of the pressure lever-1ewhen the sharply curved portions of the sole edge are presented to thetool 10. The cam 23 may be variously contrived with proper contoureither to engage the roll 42 only at isolated intervals predetermined bythe portion of the work to be treated by the tool, thus leaving thespring 3'7 compressed by the entire tension exerted by the spring 29 atall other times; or it may be so formed as to engage the roll 4-2continuously, therel e'l'l'ecting a positive continuous control over theaction of the stronger spring on the weaker one and correspondiiwlyvarying the pressure hetweenthe work and the tool.

As the shoe turns from one side to the other, causing relative movementbetween the sole edge and tool, there will be slight variations in theabsolute position of the point of contact of the tool and work. Thisnecessitates slight movements of the tool carrying mechanism, and, inheretofore existing machines, consequent variations in the pressurebetween the tool and the work. lVhen such irregularities are found tocause noticeable impairment of the quality of work done, which may occuron shoes of extreme style, the cam 23 will be designed to compensate forthe lack of uniformity in pres sure on those parts of the work andproduce'uniformity of pressure throughout, or relieve surh pressure inwhole or in part on any portion of the shoe where the full pressurebetween the tool and the work is not desired.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is:

1. In a machine of the class described, the combination of a worksupport, a tool for acting along different portions of the work as thework and tool are relatively moved. means for producing pressure between the work and tool, and means acting in opposition to the pressureproducing means for adapting the pressure between the work and tool tothe character of the work.

2. In a machine of the class described, the combination of a worksupport, a tool for acting along different portions of the work as thework and tool are relatively moved, means for producing pressure betweenthe work and tool, and automatic means acting in opposition to thepressure producing means to reduce the pressure between the work and thetool at a predetern'iined part of the work as the work and tool arerelatively moved in contact with one another.

3. In a machine of the class described, the combination of a worksupport, a tool, pres-- sure producing means acting as the work and toolare relatively moved to maintain pressure between the work and tool, andpressure relieving means acting positively in opposition to the pressureproducing means along 'predeterminet portions of the work to vary thepressure between the work and tool during the action of the tool.

at. In a machine of the class described, the combination of a worksupport, a tool for acting along different portions of the work as thework and tool are relatively moved, a yieldable pressure transmitter formaintaining pressure between the work and tool, and means actingautomatically in opposition to the pressure transmitter to modify thepressure between the \'\'O1{ and tool along a portion of the work.

5. In a machine of the class described, the combination of tool foractin along the edge of a shoe, pres-sure means acting yieldinglythrough the tool for maintaining pressure between the shoe and tool asthey are relatively moved, and pressure relieving means actingautomatically to positively inhibit the pressure exerted by the pressuremeans as the tool moves along a predetermined portion of the shoe. I

6. A n organized machine for automatically treating shoes, comprising,in combination, a shoe support, a tool for acting along differentportions of a shoe on said support, means including a spring for causingpressure between the shoe and tool as they are relatively moved, andmeans acting automatically to control directly the effective end of thespring as the tool moves along the shoe.

7. In an organized machine for automatically treating shoes, thecombination of a tool for acting along portions of the shoe, pressuremeans including a spring for causing pressure between the shoe and toolas they are relatively moved, a pressure controlling cam, andconnections between the cam and pressure means for effecting a positivelimit to the pressure between the work and tool along a predeterminedpart of the work. i

8. In a machine of the class described, the combination oi a worksupport, a tool, means for causing pressure between the work and tool asthey are relatively moved, a pressure controlling cam and meansresponsive to the action of the cam to predeterminately permit increaseor positively decrease the pressure exerted by the pressure causingmeans.

9. in a machine of the class described, the :"ion of a work support, atool, a spring or proi'nicing pressure between the work and tool as theyare relatively moved to present different portions of the work to theaction oi the tool, a pressure controlling cam, and means responsiveto-the action of the can; for directly controlling the active end of thespring.

10. in a machine of the class described, the combination of a worksupport, a tool for acting along the edge oi? the work, a pressure prohieing spring acting through the tool to produce pressure between thework and tool, a pressure controlling cam, and

connections between the cam and pressure producing spring including acompression spring tor changing the pressure of the tool upon the workalong different parts of the work.

1.1. in an automatic edge setter,

bination oi a tool for acting along the 'edge oi a shoe, a spring forpressing the tool against the edge of the shoe, a cam, and connectionsbetween the cam and spring includ ing a secono stronger spring forchanging the pressure'o'f the tool against the edge of the shoe alongdifferent portions thereof.

12. In an automatic-edge setter, the combi.

nation of a tool for acting along the edge of a shoaa pressure springfor pressing the tool against the edge oi. the shoe, a strongercompression spring, and a cam controlling the action oftl'ieconipression spring vtor modilt'ying the pressure oi the toolagainst the shoe.

13. In a machine of the class described, the combination of a worksupport, a tool for acting alongdiilerent portions of the work, apressure spring for causing pressure between the work and tool as theyare relatively moved, a stronger spring normally tending to increase thepower of the pressure spring, and means acting in opposition to thestronger spring to decrease the power the com-' of the pressure springalong predetermined portions of the worlr.

A 1 In a machine oi' the class described, the combination of aworlrsupport, a tool, means for exerting a yielding pressure be tweenthe work and tool as they are relatively moved to present diiierentportions of the n to the tool, means operable at will for placing theyielding pressure means in pressure exerting position, spring normallytending to increase the pressure of the yielding pressure means, and acam acting in opposition to the spring for modifying the pressure alonga predetermined part of the work.

15. A; machine of the character described, comprising, in combination, atool for treating different portions of a shoe, pressure means forproducing pressure between the shoe and tool as they are relativelymoved to present (afferent portions of the shoe to the tool, meansoperable by the attendant for placing the pressure means in position toexert pressure, a spring tensioned by the attendant and tendlng toincrease the pressure exerted. by the pressure means, and a cam actingautomatically as the tool moves along a predetermined part of the shoeto change the pressure between the shoe and tool.

16. In a machine of the class described, is combination of a tool foracting along ie edge of a shoe, a spring forpressing the tool againstthe edge of a shoe, having one end connected with the tool, a n'iovablabut ment to which the other end of the s nin is connected, a second andstronger spring ha'v n one end connected to the abutment and the otherend anchored, whereby stress may be transmitted from the st-rongerspringto the other spring through the abutriient, and acani and connectionsfor controlling the abutment to regulate the stress transmitted. trointhe stronger sprin l7. in a n'iachine of the class described, a tool foracting along the edge of a shoe, and means for pressing the tool andshoe together comprising a stronger and aweaker spring arranged intandem, and means for predeterminately positioning the junction point ofthe springs, whereby the stress transmitted from the stronger to theweaker can be controlled;

In testimony whereof I name to this specification.

have signed my

